WO2017142050A1 - Plastic cell and method for producing same - Google Patents

Plastic cell and method for producing same Download PDF

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Publication number
WO2017142050A1
WO2017142050A1 PCT/JP2017/005820 JP2017005820W WO2017142050A1 WO 2017142050 A1 WO2017142050 A1 WO 2017142050A1 JP 2017005820 W JP2017005820 W JP 2017005820W WO 2017142050 A1 WO2017142050 A1 WO 2017142050A1
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WO
WIPO (PCT)
Prior art keywords
plastic substrate
layer
plastic
transparent conductive
conductive layer
Prior art date
Application number
PCT/JP2017/005820
Other languages
French (fr)
Japanese (ja)
Inventor
平方　純一
Original Assignee
富士フイルム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Priority to CN201780011972.2A priority Critical patent/CN108698384B/en
Priority to JP2018500215A priority patent/JP6574042B2/en
Publication of WO2017142050A1 publication Critical patent/WO2017142050A1/en
Priority to US16/104,349 priority patent/US10442165B2/en

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    • B32B27/285—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyethers
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    • B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B23/08—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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Definitions

  • the present invention relates to a plastic cell using a plastic substrate and a manufacturing method thereof.
  • liquid crystal display devices have evolved into various forms, and a flexible display that is lightweight and can be bent has attracted attention.
  • a liquid crystal cell used for such a flexible display since a glass substrate that has been used in the past is difficult to meet the requirement of being light and bent, various plastic substrates have been studied as alternatives to the glass substrate.
  • liquid crystal cells has been extended to dimming devices used in applications such as packaging, decoration, interior, building materials, and vehicles. Even in these dimming devices, they are light and flexible, and are also two-dimensional. It is also desired to use it as a free shape having irregularities and curved surfaces instead of a flat surface, and a plastic substrate as a substitute for a glass substrate is also required for substrates in these applications.
  • Patent Document 1 discloses a sealing agent using a cured epoxy resin product having flexibility.
  • Patent Document 2 discloses a sealing method that withstands bending by a sealing method in which flexible supports are directly heat-sealed.
  • the present inventor examined the sealing agent described in Patent Document 1 and the method of reinforcing the seal portion by thermal fusion described in Patent Document 2, and when using a plastic substrate having a concavo-convex shape or a curved surface shape. Clarified that the sealing performance is lost, and it may be difficult to drive the liquid crystal, that is, to maintain the conductivity.
  • the reinforcing method described in Patent Document 2 cannot heat-seal the entire cell side for taking out the lead wire portion (electrode), but heat-seal the two sides, and the remaining two sides are a sealing agent. It was necessary to use it together.
  • the present invention provides a plastic cell that can maintain the conductivity without losing the sealing property and can take out the electrode even when the plastic substrate is deformed into a free shape having irregularities and curved surfaces, and a method for manufacturing the same. It is an issue to provide.
  • the present inventor as a sealing method used for a plastic cell, seals a fluid layer by deforming (for example, heat-sealing) a part of a plastic substrate disposed above and below the plastic cell, and By providing a through hole in a plastic substrate and filling it with a conductive material, even if the plastic substrate is greatly deformed, the sealing performance is not lost, and the conductivity of the plastic cell can be maintained and the electrode can be taken out. I found out that That is, it has been found that the above-described problem can be achieved by the following configuration.
  • first plastic substrate has a first plastic substrate, a first transparent conductive layer, a fluid layer, a second transparent conductive layer, and a second plastic substrate in this order, Furthermore, a part of the first plastic substrate or the second plastic substrate has a sealing portion for deforming and sealing the fluid layer,
  • the first plastic substrate has a first through hole;
  • the second plastic substrate has a second through hole; Having a first conductive material in the first through hole;
  • the plastic cell according to [1] wherein the first conductive material is the same material as the first transparent conductive layer, and the second conductive material is the same material as the second transparent conductive layer.
  • An alignment layer is provided between the first transparent conductive layer and the fluid layer and between the second transparent conductive layer and the fluid layer,
  • the first plastic substrate and the second plastic substrate are both long films,
  • Further having an electrode The plastic cell according to any one of [1] to [4], wherein the electrode and at least one of the first transparent conductive layer and the second transparent conductive layer are connected via a conductive material.
  • a step of opening a first through hole in a long first plastic substrate Disposing a first transparent conductive layer on a long first plastic substrate having a first through-hole, Opening a second through hole in a long second plastic substrate; Disposing a second transparent conductive layer on a long second plastic substrate having a second through-hole, Disposing a fluid layer on the first transparent conductive layer;
  • the first plastic substrate in which the fluid layer is arranged on the first transparent conductive layer and the second plastic substrate in which the second transparent conductive layer is arranged are bonded together by a roll-to-roll, and is long.
  • a step of producing a laminate of A step of sealing the fluid layer in the longitudinal direction by thermally fusing the first plastic substrate and the second plastic substrate after producing the laminate; and A step of winding the laminate into a roll,
  • a method for producing a plastic cell comprising:
  • the present invention it is possible to provide a plastic cell that maintains conductivity without losing its sealing performance even when the plastic substrate is deformed into a free shape having irregularities and curved surfaces, and a method for manufacturing the same.
  • FIG. 1 is a schematic cross-sectional view showing one embodiment of the plastic cell of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing one embodiment of the plastic cell of the present invention.
  • a numerical range expressed using “to” means a range including numerical values described before and after “to” as a lower limit value and an upper limit value.
  • cutting includes “punching” and “cutting”.
  • the plastic cell of the present invention includes a first plastic substrate, a first transparent conductive layer, a fluid layer, a second transparent conductive layer, and a second plastic substrate in this order.
  • the plastic cell of the present invention includes a sealing portion that seals the fluid layer by deforming a part of the first plastic substrate or the second plastic substrate.
  • the first plastic substrate and the second plastic substrate each have a first through hole and a second through hole.
  • the plastic cell of the present invention has a first conductive material and a second conductive material in the first through hole and the second through hole, respectively.
  • the plastic cell 100 of the present invention includes a first plastic substrate 1, a first transparent conductive layer 2, a fluid layer 4, a second transparent conductive layer 6, 2 plastic substrates 7 in this order.
  • the alignment layer 3 is provided between the first transparent conductive layer 2 and the fluid layer 4 and between the second transparent conductive layer 6 and the fluid layer 4, respectively.
  • the orientation layer 5 is arrange
  • the plastic cell 100 of the present invention includes a sealed portion in which a part of the first plastic substrate 1 or the second plastic substrate 7 is deformed to seal the fluid layer 4. 14 As shown in FIG.
  • the first plastic substrate 1 has a first through hole 12, and the second plastic substrate 7 has a second through hole 13.
  • the first through hole 12 has a first conductive material
  • the second through hole 13 has a second conductive material.
  • the first conductive material and the second conductive material are formed integrally with the transparent conductive layer 2 and the transparent conductive layer 6, respectively.
  • conductive paste 9 and conductive paste 11 are provided on the conductive material in through-hole 12 and through-hole 13, respectively, and these are not shown in the drawing. Are connected via the conductive wires 8 and 11 connected to the electrodes.
  • the first plastic substrate and the second plastic substrate of the plastic cell of the present invention (hereinafter simply referred to as “plastic substrate” unless otherwise required) have high moldability. It is a board
  • thermoplastic resin As the thermoplastic resin, a polymer resin excellent in optical transparency, mechanical strength, thermal stability and the like is preferable.
  • thermoplastic resin examples include polycarbonate polymers; polyester polymers such as polyethylene terephthalate (PET); acrylic polymers such as polymethyl methacrylate (PMMA); polystyrene, acrylonitrile / styrene copolymers (AS Styrenic polymers such as resin); and the like.
  • Polyolefins such as polyethylene and polypropylene; polyolefin polymers such as norbornene resins and ethylene / propylene copolymers; amide polymers such as vinyl chloride polymers, nylons and aromatic polyamides; imide polymers; sulfone polymers; Ether sulfone polymer; polyether ether ketone polymer; polyphenylene sulfide polymer; vinylidene chloride polymer; vinyl alcohol polymer; vinyl butyral polymer; arylate polymer; polyoxymethylene polymer; epoxy polymer; And a typical cellulose-based polymer; or a copolymer obtained by copolymerizing monomer units of these polymers.
  • the thermoplastic resin include a polymer obtained by mixing two or more of the polymers exemplified above.
  • the plastic substrate of the plastic cell of the present invention has a through hole.
  • the shape of the through hole is not particularly limited, and may be various shapes such as a circle and a rectangle.
  • the through hole of the plastic substrate has a conductive material in the through hole.
  • the material used for the conductive material is not particularly limited, and the same material as that used for the transparent conductive layer described later is preferably used, and more preferably formed integrally with the transparent conductive layer described later. In this case, by disposing the transparent conductive layer after opening the through hole in the plastic substrate, the transparent conductive layer can be continuously formed up to the inside of the through hole and can also serve as the conductive material.
  • the conductive material preferably occupies 50% or more of the volume of the through hole, more preferably 70% or more, and even more preferably 90% or more.
  • Both the first transparent conductive layer and the second transparent conductive layer (hereinafter simply referred to as “transparent conductive layer” unless otherwise required) included in the plastic cell of the present invention are disposed on the plastic substrate. And a conductive layer.
  • “having conductivity” means that the sheet resistance value is 0.1 ⁇ / ⁇ to 10,000 ⁇ / ⁇ , and also includes what is generally called an electric resistance layer.
  • the sheet resistance value is preferably low, specifically preferably 300 ⁇ / ⁇ or less, particularly preferably 200 ⁇ / ⁇ or less, and 100 ⁇ / ⁇ or less. Most preferably.
  • transparent means that the transmittance is 60% or more and 99% or less.
  • the transmittance of the transparent conductive layer is preferably 75% or more, particularly preferably 80% or more, and most preferably 90% or more.
  • Materials that can be used for the transparent conductive layer used in the present invention include metal oxides (Indium Tin Oxide: ITO, etc.), carbon nanotubes (Carbon Nanotube: CNT, Carbon Nanobud: CNB, etc.), graphene, polymer conductors (polyacetylene, Polypyrrole, polyphenol, polyaniline, PEDOT / PSS, etc.), metal nanowires (silver nanowires, copper nanowires, etc.), metal meshes (silver mesh, copper meshes, etc.) and the like can be mentioned.
  • metal oxides Indium Tin Oxide: ITO, etc.
  • carbon nanotubes Carbon Nanotube: CNT, Carbon Nanobud: CNB, etc.
  • graphene polymer conductors (polyacetylene, Polypyrrole, polyphenol, polyaniline, PEDOT / PSS, etc.), metal nanowires (silver nanowires, copper nanowires, etc.), metal meshes (silver mesh, copper meshes, etc
  • PEDOT / PSS refers to a polymer complex in which PEDOT (a polymer of 3,4-ethylenedioxythiophene) and PSS (a polymer of styrene sulfonic acid) coexist.
  • the conductive layer of the metal mesh is preferably formed by dispersing conductive fine particles such as silver and copper in a matrix rather than the conductive layer formed of only metal.
  • Metal oxides such as ITO are ceramic materials, and when molding without using shrinkage as in the prior art, the problem is that cracks are easily formed by the stretching action and the sheet resistance value increases significantly. was there.
  • the present invention can suppress the generation of cracks by utilizing the shrinkage, improves the problem of high sheet resistance, which has been a problem in the past, and can be used as a transparent conductive layer.
  • a conductive layer in which particles such as metal mesh, carbon nanotube, and metal nanowires are dispersed in a matrix follows the shrinkage of the plastic substrate by setting the glass transition temperature (Tg) of the matrix below the shrinkage temperature of the plastic substrate.
  • Tg glass transition temperature
  • an alignment layer may be provided between a transparent conductive layer provided on the plastic substrate and a fluid layer described later.
  • an alignment layer is provided on the outermost surfaces of the first plastic substrate and the second plastic substrate used in the plastic cell, and a function of aligning a fluid layer containing a liquid crystal compound can be provided.
  • the alignment layer used in the present invention may be an alignment layer that horizontally aligns the liquid crystalline composition contained in the fluid layer when no voltage is applied, or an alignment layer that vertically aligns.
  • the material and processing method of the alignment layer are not particularly limited.
  • An alignment layer using a polymer, an alignment layer subjected to a silane coupling process, an alignment layer using a quaternary ammonium salt, and silicon oxide are deposited from an oblique direction.
  • Various alignment layers such as an alignment layer and an alignment layer utilizing photoisomerization can be used.
  • a surface treatment for the alignment layer a surface treatment by rubbing treatment, energy ray irradiation, light irradiation, or the like may be used.
  • a layer using polyamic acid or polyimide As an alignment layer using a polymer, a layer using polyamic acid or polyimide; a layer using modified or non-modified polyvinyl alcohol; a layer using modified or non-modified polyacrylic acid; in the following general formula (I)
  • (meth) acrylic acid is a notation representing acrylic acid or methacrylic acid.
  • R 1 and R 2 are each independently a hydrogen atom, a halogen atom or an alkyl group having 1 to 6 carbon atoms; M is a proton, an alkali L 0 is a divalent selected from the group consisting of —O—, —CO—, —NH—, —SO 2 —, an alkylene group, an alkenylene group, an arylene group, and combinations thereof.
  • R 0 is a hydrocarbon group having 10 to 100 carbon atoms or a fluorine atom-substituted hydrocarbon group having 1 to 100 carbon atoms; Cy is an aliphatic ring group, aromatic group or It is a heterocyclic group, preferably having a carbazole group; m is 10 to 99 mol%; and n is 1 to 90 mol%.
  • an alignment layer containing any one of polyimide, compounds represented by the general formulas (I) to (III), and a silane coupling agent is advantageous in terms of alignment ability, durability, insulation, and cost. It is preferable from the viewpoint, and it is particularly preferable to use an alignment layer containing any of polyimide and a compound represented by the general formulas (I) to (III) and having a carbazole group.
  • a photo-alignment layer that enables alignment treatment of liquid crystal by irradiation with polarized and non-polarized ultraviolet (UV) light may be used.
  • UV ultraviolet
  • the fluid layer of the plastic cell of the present invention is not particularly limited as long as it is a fluid continuous material other than gas and plasma fluid.
  • a particularly preferable material state is preferably a liquid and a liquid crystal body, and a fluid layer is most preferably a liquid crystal layer formed using a liquid crystal composition containing a liquid crystal compound.
  • liquid crystal compounds can be classified into a rod type and a disk type from the shape.
  • Polymer generally refers to a polymer having a degree of polymerization of 100 or more (Polymer Physics / Phase Transition Dynamics, Masao Doi, 2 pages, Iwanami Shoten, 1992).
  • any liquid crystal compound can be used, but a rod-like liquid crystal compound or a discotic liquid crystal compound (discotic liquid crystal compound) is preferably used.
  • Two or more kinds of rod-like liquid crystalline compounds, two or more kinds of disc-like liquid crystalline compounds, or a mixture of a rod-like liquid crystalline compound and a disk-like liquid crystalline compound may be used.
  • the liquid crystal compound is a mixture of two or more, it is preferable that at least one liquid crystal compound has two or more polymerizable groups in one molecule.
  • the plastic cell of the present invention is preferably an embodiment in which the fluid layer is a liquid crystal layer, that is, a liquid crystal cell.
  • the liquid crystal cell is a liquid crystal cell used in a liquid crystal display device used in a flat-screen television, a monitor, a notebook computer, a mobile phone, and the like, and a light intensity applied to interiors, building materials, vehicles, and the like.
  • a liquid crystal cell used for an optical device is also included. That is, it is a general term for devices that drive a liquid crystal composition having a polarizability by adjusting a voltage of a liquid crystal composition or the like sealed between two substrates.
  • IPS In-Plane-Switching: IPS
  • vertical alignment type Virtual Alignment: VA
  • twisted nematic type Twisted Nematic: TN
  • super twisted nematic type TW
  • Various methods including STN can be used.
  • a dye molecule used for changing the intensity of light in the light control element may be used in combination.
  • a backlight member may be provided outside or attached to the outside of the liquid crystal cell.
  • a polarizing plate member may be provided outside or attached to the outside of the liquid crystal cell.
  • the plastic cell of this invention has the sealing part which seals the fluid layer mentioned above.
  • the sealing portion is formed by deforming a part of the first plastic substrate or the second plastic substrate, it includes a part of the first plastic substrate or the second plastic substrate.
  • the said sealing part is the sealing formed by the heat sealing
  • the planar shape of the plastic cell of the present invention may be rectangular. There are no restrictions on the size of the square or rectangle.
  • the plastic cell of the present invention may have a planar shape other than a rectangle.
  • it may be a circle, an ellipse, a triangle, a polygon more than a pentagon, a free shape combining straight lines and curves, and if the periphery of a plastic cell is sealed, the inside will be like a donut shape. It may be a hollow shape.
  • the plastic cell of this invention can use a elongate film as a 1st plastic substrate and a 2nd plastic substrate, after setting it as a plastic cell, it is set as the roll form wound up by the longitudinal direction. You can also. This can contribute to packing, shipping, transportation, etc. of the plastic cell of the present invention.
  • an electrode connected to the transparent conductive layer may be attached via a conductive material.
  • a conductive material exposed on the surface opposite to the transparent conductive layer of the plastic substrate can be used such as a method of connecting to a lead terminal using a conductive material such as silver paste or a conductive tape.
  • the plastic cell manufacturing method of the present invention includes a step of opening a first through-hole in a long first plastic substrate (hereinafter referred to as a “through-hole forming step”).
  • a step of disposing a first transparent conductive layer on a long first plastic substrate having a first through hole (hereinafter also referred to as “conductive layer disposing step 1”); A step of opening a second through hole in the long second plastic substrate (hereinafter, also referred to as “through hole forming step 2”), A step of arranging a second transparent conductive layer on a long second plastic substrate having a second through hole (hereinafter also referred to as “conductive layer arranging step 2”); A step of disposing a fluid layer on the first transparent conductive layer (hereinafter also abbreviated as “fluid layer disposing step”);
  • the first plastic substrate in which the fluid layer is arranged on the first transparent conductive layer and the second plastic substrate in which the second transparent conductive layer is arranged are bonded together by a roll-to-roll, and is long.
  • a step of manufacturing the laminate (hereinafter also abbreviated as “laminate preparation step”), After the laminated body is manufactured, the step of sealing the fluid layer in the longitudinal direction by heat-sealing the first plastic substrate and the second plastic substrate (hereinafter also abbreviated as “sealing step”), and , A step of winding the laminate into a roll, The manufacturing method of the plastic cell containing this.
  • through-hole forming step 1 and through-hole forming step 2 hereinafter simply referred to as “through-hole forming step” unless otherwise required
  • conductive layer arranging step 1 and conductive layer arranging step 2 (hereinafter referred to as “through-hole forming step”). If there is no particular need for distinction, it is simply abbreviated as “conductive layer arranging step”.), And the fluid layer arranging step, the laminate manufacturing step, and the sealing step will be described in detail.
  • the through-hole forming step 1 included in the manufacturing method of the present invention is a step of opening a first through-hole in a long first plastic substrate, and the through-hole forming step 2 is a long second plastic. In this step, a second through hole is formed in the substrate.
  • the method of forming the through hole in the plastic substrate is not particularly limited, and various known methods can be used.
  • the through-hole can be formed using a sword, a needle, a drill, a carbon dioxide laser, a laser such as a YAG (Yttrium Aluminum Garnet) laser, plasma, or the like.
  • the conductive layer disposing step 1 of the manufacturing method of the present invention is a step of disposing the first transparent conductive layer on the long first plastic substrate having the first through holes formed therein.
  • the conductive layer disposing step 2 is a step of disposing a second transparent conductive layer on a long second plastic substrate having a second through hole.
  • the method for disposing the transparent conductive layer on the plastic substrate having the through holes is not particularly limited, and materials that can be used for the transparent conductive layer described in the plastic cell of the present invention include, for example, coating, vapor deposition, printing, and the like. It can arrange
  • the fluid layer arrangement step of the manufacturing method of the present invention is a step of arranging a fluid layer on the first transparent conductive layer.
  • the method of disposing the fluid layer on the first transparent conductive layer is not particularly limited, and various known methods such as coating, dipping, and injection utilizing capillary action can be used.
  • the laminate manufacturing process of the manufacturing method of the present invention includes a first plastic substrate on which a first transparent conductive layer and a fluid layer are disposed, and a second plastic substrate on which a second transparent conductive layer is disposed. , And a roll-to-roll process to produce a long laminate.
  • the method of bonding by roll-to-roll is not particularly limited.
  • the first plastic substrate on which the first transparent conductive layer and the fluid layer are arranged, and the second on which the second transparent conductive layer is arranged For example, a method in which the plastic substrate is bonded to each other through a nip roll can be used.
  • the sealing step of the manufacturing method of the present invention is a step of sealing the fluid layer in the longitudinal direction by thermally fusing the first plastic substrate and the second plastic substrate.
  • the method of heat fusion is not particularly limited as long as a method of giving energy necessary for heat fusion to the plastic substrate is used. Specific examples include a method in which a high-temperature metal element is brought into contact with a plastic substrate, a method in which a COx laser is condensed and applied to the plastic substrate, and a method in which ultrasonic waves are applied to the plastic substrate.
  • Example 1 ⁇ Preparation of transparent conductive layer> After making a through hole in a polycarbonate (PC-2151, thickness 250 ⁇ m) made by Teijin Limited using a punch, using an Ag nanowire by the method described in Example 1 of US2013 / 0341074 A transparent conductive layer was produced, and a laminate was produced in which a plastic substrate made of polycarbonate and a transparent conductive layer made of Ag nanowires were laminated. In the produced laminated body, the electrically conductive material which consists of Ag nanowire was formed also in the through-hole provided in the polycarbonate.
  • spacer layer dispersion was prepared according to the following formulation. ⁇ Formulation of spacer layer dispersion ⁇ Bead spacer SP-208 (manufactured by Sekisui Chemical Co., Ltd.) 100 parts by mass methyl isobutyl ketone solid content: 0.2% amount ⁇ ⁇
  • the produced spacer layer dispersion was applied on each of two sets of laminates on which liquid crystal alignment layers were laminated using an applicator with a clearance of 100 ⁇ m. Then, it heated so that film surface temperature might be 60 degreeC, it dried for 1 minute, and produced 2 sets of laminated bodies which have a spacer layer.
  • a liquid crystal layer composition was prepared according to the following formulation.
  • ⁇ Liquid crystal layer composition ⁇ ZLI2806 (manufactured by Merck) 100 parts by mass cholesteric nonanate (manufactured by Tokyo Chemical Industry) 1.74 parts by mass G-472 (manufactured by Hayashibara) 3.00 parts by mass -------- ⁇
  • the prepared liquid crystal layer composition is dropped into the center of one of the two laminates having the spacer layer prepared above, sandwiched between the laminates having the other spacer layer, and the liquid crystal layer composition by a roller.
  • the four sides of the laminate were sealed by heat fusion at 230 ° C. for 5 seconds using a heating temperature control electric sealer (OPL-600-10, manufactured by Fuji Impulse), and a plastic cell in which liquid crystal was sealed.
  • 001 was produced.
  • the sealed portion of the plastic cell 001 produced as described above was cut with a microtome and confirmed with a field emission scanning electron microscope (S-5200, manufactured by Hitachi High-Technologies Corporation). As shown in FIG. The plastic substrate 1 on the front surface (upper surface) and the plastic substrate 7 on the rear surface (lower surface) are directly bonded to seal the fluid layer 4, and there is no transparent conductive layer between the two plastic substrates. It was.
  • the plastic cell 001 produced as described above was confirmed to have no problem in the sealed portion even when it was bent at 90 ° near the center for confirmation of flexibility.
  • Example 1 a plastic cell 002 is manufactured in the same manner as in Example 1 except that four sides are sealed with a UV sealant (TB1220, manufactured by Three Bond) instead of heat sealing the ends. did.
  • a UV sealant TB1220, manufactured by Three Bond

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Abstract

The present invention addresses the problem of providing a plastic cell that makes it possible to extract an electrode and retain conductivity without losing sealability even if a plastic substrate deforms into a free form having a relief or curved surface, and of providing a method for producing the same. This plastic cell includes, in the following order, a first plastic substrate, a first transparent conductive layer, a fluid layer, a second transparent conductive layer, and a second plastic substrate, said plastic cell further including a sealing section for sealing the fluid layer by deforming part of the first plastic substrate or the second plastic substrate. The first plastic substrate has a first through hole, and the second plastic substrate has a second through hole. The first through hole has a first conductive material therein, and the second through hole has a second conductive material therein.

Description

プラスチックセルおよびその製造方法Plastic cell and manufacturing method thereof
　本発明は、プラスチック基板を用いたプラスチックセルとその製造方法に関する。 The present invention relates to a plastic cell using a plastic substrate and a manufacturing method thereof.
　近年、液晶表示装置は様々な形態へ進化しており、軽量で、曲げることができるフレキシブルディスプレイが注目されている。このようなフレキシブルディスプレイに用いられる液晶セルにおいては、従来用いられてきたガラス基板では、軽量で曲げられる要求に応えるのは困難であるため、ガラス基板の代替として各種プラスチック基板が検討されている。 In recent years, liquid crystal display devices have evolved into various forms, and a flexible display that is lightweight and can be bent has attracted attention. In a liquid crystal cell used for such a flexible display, since a glass substrate that has been used in the past is difficult to meet the requirement of being light and bent, various plastic substrates have been studied as alternatives to the glass substrate.
　また、液晶セルの用途は、包装、装飾、インテリア、建材、車両などの用途で用いられる調光装置にも広がっており、これら調光装置においても、軽くて曲げられるフレキシブル性、さらには２次元平面ではなく、凹凸や曲面をもつ自由な形状として用いることも望まれており、これらの用途における基板においても、ガラス基板の代替としてプラスチック基板の実用化が求められている。 In addition, the use of liquid crystal cells has been extended to dimming devices used in applications such as packaging, decoration, interior, building materials, and vehicles. Even in these dimming devices, they are light and flexible, and are also two-dimensional. It is also desired to use it as a free shape having irregularities and curved surfaces instead of a flat surface, and a plastic substrate as a substitute for a glass substrate is also required for substrates in these applications.
　一方、フレキシブル性を持つ液晶セルを作製しようとした場合には、その液晶セル中の液晶性化合物をシールするシール剤もフレキシブル性を持つ必要がある。
　このようなフレキシブル性を持ったシール剤としては、例えば、特許文献１には、可撓性を付与したエポキシ樹脂硬化物を用いたシール剤が開示されている。
　また、特許文献２には、フレキシブル支持体同士を直接熱融着させるシール方法によって、折り曲げに耐えるシール方法が開示されている。 On the other hand, when an attempt is made to produce a liquid crystal cell having flexibility, the sealing agent for sealing the liquid crystalline compound in the liquid crystal cell also needs to have flexibility.
As a sealing agent having such flexibility, for example, Patent Document 1 discloses a sealing agent using a cured epoxy resin product having flexibility.
Patent Document 2 discloses a sealing method that withstands bending by a sealing method in which flexible supports are directly heat-sealed.
特開昭６２－１８５２３号公報JP-A-62-18523 特開昭６２－７０８１４号公報JP-A-62-70814
　本発明者は、特許文献１に記載されたシール剤および特許文献２に記載された熱融着によるシール部の補強方法を検討したところ、凹凸形状や曲面形状を有するプラスチック基板を用いた場合には、シール性が失われ、液晶の駆動、すなわち導電性を保つことが困難となる場合があることを明らかとした。また、特許文献２に記載された補強方法は、リード線部分（電極）取り出しのために、セル全辺を熱融着できず、二辺を熱融着し、残りの二辺はシール剤と併用する必要があった。 The present inventor examined the sealing agent described in Patent Document 1 and the method of reinforcing the seal portion by thermal fusion described in Patent Document 2, and when using a plastic substrate having a concavo-convex shape or a curved surface shape. Clarified that the sealing performance is lost, and it may be difficult to drive the liquid crystal, that is, to maintain the conductivity. In addition, the reinforcing method described in Patent Document 2 cannot heat-seal the entire cell side for taking out the lead wire portion (electrode), but heat-seal the two sides, and the remaining two sides are a sealing agent. It was necessary to use it together.
　そこで、本発明は、プラスチック基板が凹凸や曲面をもつ自由な形状に変形した場合であっても、シール性を失わずに導電性を保ち、電極の取り出しを可能にするプラスチックセルおよびその製造方法を提供することを課題とする。 Therefore, the present invention provides a plastic cell that can maintain the conductivity without losing the sealing property and can take out the electrode even when the plastic substrate is deformed into a free shape having irregularities and curved surfaces, and a method for manufacturing the same. It is an issue to provide.
　本発明者は、鋭意検討の結果、プラスチックセルに用いられるシール方法に関して、プラスチックセルの上下に配置したプラスチック基板の一部を変形（例えば、熱融着）させて流体層を封止し、かつ、プラスチック基板に貫通孔を設け、その中を導電材料で満たすことにより、プラスチック基板が大きく変形した場合であっても、シール性を失わず、プラスチックセルの導電性を保ち、電極の取り出しが可能となることを見出した。
　すなわち、以下の構成により上記課題を達成することができることを見出した。 As a result of intensive studies, the present inventor, as a sealing method used for a plastic cell, seals a fluid layer by deforming (for example, heat-sealing) a part of a plastic substrate disposed above and below the plastic cell, and By providing a through hole in a plastic substrate and filling it with a conductive material, even if the plastic substrate is greatly deformed, the sealing performance is not lost, and the conductivity of the plastic cell can be maintained and the electrode can be taken out. I found out that
That is, it has been found that the above-described problem can be achieved by the following configuration.
　［１］　第１のプラスチック基板と、第１の透明導電層と、流体層と、第２の透明導電層と、第２のプラスチック基板と、をこの順に有し、
　さらに、第１のプラスチック基板または第２のプラスチック基板の一部が変形して流体層を封止する封止部分を有し、
　第１のプラスチック基板が、第１の貫通孔を有し、
　第２のプラスチック基板が、第２の貫通孔を有し、
　第１の貫通孔中に第１の導電材料を有し、
　第２の貫通孔中に第２の導電材料を有する、プラスチックセル。
　［２］　第１の導電材料が、第１の透明導電層と同じ材料であり、第２の導電材料が、第２の透明導電層と同じ材料である、［１］に記載のプラスチックセル。
　［３］　第１の透明導電層と流体層との間、および、第２の透明導電層と流体層との間に、それぞれ配向層を有し、
　流体層が、液晶性化合物を含有する液晶組成物を用いて形成された液晶層である、［１］または［２］に記載のプラスチックセル。
　［４］　第１のプラスチック基板および第２のプラスチック基板がいずれも長尺状のフィルムであり、
　長尺状のフィルムの長手方向に巻き取られたロール形態である、［１］～［３］のいずれかに記載のプラスチックセル。
　［５］　さらに電極を有し、
　電極と、第１の透明導電層および第２の透明導電層の少なくとも一方とが導電材料を介して接続されている、［１］～［４］のいずれかに記載のプラスチックセル。
　［６］　長尺状の第１のプラスチック基板に第１の貫通孔を開ける工程、
　第１の貫通孔が開けられた長尺状の第１のプラスチック基板に第１の透明導電層を配置する工程、
　長尺状の第２のプラスチック基板に第２の貫通孔を開ける工程、
　第２の貫通孔が開けられた長尺状の第２のプラスチック基板に第２の透明導電層を配置する工程、
　第１の透明導電層の上に、流体層を配置する工程、
　第１の透明導電層の上に流体層が配置された第１のプラスチック基板と、第２の透明導電層が配置された第２のプラスチック基板とを、ロールトゥロールで貼り合わせ、長尺状の積層体を作製する工程、
　積層体を作製した後、第１のプラスチック基板および第２のプラスチック基板を熱融着することにより、流体層を長手方向に封止する工程、および、
　積層体をロール状に巻く工程、
　を含む、プラスチックセルの製造方法。 [1] It has a first plastic substrate, a first transparent conductive layer, a fluid layer, a second transparent conductive layer, and a second plastic substrate in this order,
Furthermore, a part of the first plastic substrate or the second plastic substrate has a sealing portion for deforming and sealing the fluid layer,
The first plastic substrate has a first through hole;
The second plastic substrate has a second through hole;
Having a first conductive material in the first through hole;
A plastic cell having a second conductive material in the second through hole.
[2] The plastic cell according to [1], wherein the first conductive material is the same material as the first transparent conductive layer, and the second conductive material is the same material as the second transparent conductive layer.
[3] An alignment layer is provided between the first transparent conductive layer and the fluid layer and between the second transparent conductive layer and the fluid layer,
The plastic cell according to [1] or [2], wherein the fluid layer is a liquid crystal layer formed using a liquid crystal composition containing a liquid crystal compound.
[4] The first plastic substrate and the second plastic substrate are both long films,
The plastic cell according to any one of [1] to [3], which is in the form of a roll wound in the longitudinal direction of a long film.
[5] Further having an electrode,
The plastic cell according to any one of [1] to [4], wherein the electrode and at least one of the first transparent conductive layer and the second transparent conductive layer are connected via a conductive material.
[6] A step of opening a first through hole in a long first plastic substrate;
Disposing a first transparent conductive layer on a long first plastic substrate having a first through-hole,
Opening a second through hole in a long second plastic substrate;
Disposing a second transparent conductive layer on a long second plastic substrate having a second through-hole,
Disposing a fluid layer on the first transparent conductive layer;
The first plastic substrate in which the fluid layer is arranged on the first transparent conductive layer and the second plastic substrate in which the second transparent conductive layer is arranged are bonded together by a roll-to-roll, and is long. A step of producing a laminate of
A step of sealing the fluid layer in the longitudinal direction by thermally fusing the first plastic substrate and the second plastic substrate after producing the laminate; and
A step of winding the laminate into a roll,
A method for producing a plastic cell, comprising:
　本発明によれば、プラスチック基板が凹凸や曲面をもつ自由な形状に変形した場合であっても、シール性を失わずに導電性を保つプラスチックセルおよびその製造方法を提供することができる。 According to the present invention, it is possible to provide a plastic cell that maintains conductivity without losing its sealing performance even when the plastic substrate is deformed into a free shape having irregularities and curved surfaces, and a method for manufacturing the same.
図１は、本発明のプラスチックセルの一態様を示す模式的な断面図である。FIG. 1 is a schematic cross-sectional view showing one embodiment of the plastic cell of the present invention. 図２は、本発明のプラスチックセルの一態様を示す模式的な断面図である。FIG. 2 is a schematic cross-sectional view showing one embodiment of the plastic cell of the present invention.
　以下、本発明について詳細に説明する。
　以下に記載する構成要件の説明は、本発明の代表的な実施態様に基づいてなされることがあるが、本発明はそのような実施態様に限定されるものではない。
　なお、本明細書において、「～」を用いて表される数値範囲は、「～」の前後に記載される数値を下限値および上限値として含む範囲を意味する。
　また、本明細書において、「裁断」には「打ち抜き」および「切り出し」等も含むものとする。 Hereinafter, the present invention will be described in detail.
The description of the constituent elements described below may be made based on typical embodiments of the present invention, but the present invention is not limited to such embodiments.
In this specification, a numerical range expressed using “to” means a range including numerical values described before and after “to” as a lower limit value and an upper limit value.
In this specification, “cutting” includes “punching” and “cutting”.
［プラスチックセル］
　本発明のプラスチックセルは、第１のプラスチック基板と、第１の透明導電層と、流体層と、第２の透明導電層と、第２のプラスチック基板と、をこの順に有する。
　また、本発明のプラスチックセルは、第１のプラスチック基板または第２のプラスチック基板の一部が変形して流体層を封止する封止部分を有する。
　更に、本発明のプラスチックセルは、第１のプラスチック基板および第２のプラスチック基板が、それぞれ、第１の貫通孔および第２の貫通孔を有する。
　更にまた、本発明のプラスチックセルは、第１の貫通孔および第２の貫通孔の中に、それぞれ、第１の導電材料および第２の導電材料を有する。 [Plastic cell]
The plastic cell of the present invention includes a first plastic substrate, a first transparent conductive layer, a fluid layer, a second transparent conductive layer, and a second plastic substrate in this order.
In addition, the plastic cell of the present invention includes a sealing portion that seals the fluid layer by deforming a part of the first plastic substrate or the second plastic substrate.
Furthermore, in the plastic cell of the present invention, the first plastic substrate and the second plastic substrate each have a first through hole and a second through hole.
Furthermore, the plastic cell of the present invention has a first conductive material and a second conductive material in the first through hole and the second through hole, respectively.
　図１および図２は、それぞれ本発明のプラスチックセルの一態様を示す模式的な断面図である。
　図１および図２に示すように、本発明のプラスチックセル１００は、第１のプラスチック基板１と、第１の透明導電層２と、流体層４と、第２の透明導電層６と、第２のプラスチック基板７と、をこの順に有する。なお、図１および図２に示す態様においては、第１の透明導電層２と流体層４との間、および、第２の透明導電層６と流体層４との間に、それぞれ配向層３および配向層５が配置されている。
　また、図１および図２に示すように、本発明のプラスチックセル１００は、第１のプラスチック基板１または第２のプラスチック基板７の一部が変形して流体層４を封止する封止部分１４を有する。
　また、図２に示すように、本発明のプラスチックセル１００は、第１のプラスチック基板１が第１の貫通孔１２を有し、第２のプラスチック基板７が第２の貫通孔１３を有する。第１の貫通孔１２中には第１の導電材料を有し、第２の貫通孔１３中に第２の導電材料を有する。
　なお、図２に示す態様においては、第１の導電材料および第２の導電材料は、それぞれ、透明導電層２および透明導電層６と一体的に形成されている。また、図２に示す態様においては、貫通孔１２および貫通孔１３の中に有する導電材料の上に、それぞれ導電ペースト９および導電ペースト１１が設けられており、これらと図示していない電極とが、電極に繋がる導線８および１１を介して繋がっている。 1 and 2 are schematic cross-sectional views showing one embodiment of the plastic cell of the present invention.
As shown in FIGS. 1 and 2, the plastic cell 100 of the present invention includes a first plastic substrate 1, a first transparent conductive layer 2, a fluid layer 4, a second transparent conductive layer 6, 2 plastic substrates 7 in this order. In the embodiment shown in FIGS. 1 and 2, the alignment layer 3 is provided between the first transparent conductive layer 2 and the fluid layer 4 and between the second transparent conductive layer 6 and the fluid layer 4, respectively. And the orientation layer 5 is arrange | positioned.
As shown in FIGS. 1 and 2, the plastic cell 100 of the present invention includes a sealed portion in which a part of the first plastic substrate 1 or the second plastic substrate 7 is deformed to seal the fluid layer 4. 14
As shown in FIG. 2, in the plastic cell 100 of the present invention, the first plastic substrate 1 has a first through hole 12, and the second plastic substrate 7 has a second through hole 13. The first through hole 12 has a first conductive material, and the second through hole 13 has a second conductive material.
In the embodiment shown in FIG. 2, the first conductive material and the second conductive material are formed integrally with the transparent conductive layer 2 and the transparent conductive layer 6, respectively. In the embodiment shown in FIG. 2, conductive paste 9 and conductive paste 11 are provided on the conductive material in through-hole 12 and through-hole 13, respectively, and these are not shown in the drawing. Are connected via the conductive wires 8 and 11 connected to the electrodes.
〔プラスチック基板〕
　本発明のプラスチックセルが有する第１のプラスチック基板および第２のプラスチック基板（以下、特に区別を要しない場合は単に「プラスチック基板」とも略す。）は、いずれも、自由度の高い成型性を実現する観点から用いられる基板である。
　プラスチックセルを作製する際に、局所的に延伸、収縮等の寸法変化が起こるため、プラスチック基板としては、熱可塑性樹脂を用いることが好ましい。
　熱可塑性樹脂としては、光学的な透明性、機械的強度、熱安定性などに優れるポリマー樹脂が好ましい。 [Plastic substrate]
The first plastic substrate and the second plastic substrate of the plastic cell of the present invention (hereinafter simply referred to as “plastic substrate” unless otherwise required) have high moldability. It is a board | substrate used from a viewpoint to do.
When producing a plastic cell, a dimensional change such as stretching or shrinkage occurs locally. Therefore, it is preferable to use a thermoplastic resin as the plastic substrate.
As the thermoplastic resin, a polymer resin excellent in optical transparency, mechanical strength, thermal stability and the like is preferable.
　上記熱可塑性樹脂に含まれるポリマーとしては、例えば、ポリカーボネート系ポリマー；ポリエチレンテレフタレート（ＰＥＴ）等のポリエステル系ポリマー；ポリメチルメタクリレート（ＰＭＭＡ）等のアクリル系ポリマー；ポリスチレン、アクリロニトリル・スチレン共重合体（ＡＳ樹脂）等のスチレン系ポリマー；などが挙げられる。
　また、ポリエチレン、ポリプロピレン等のポリオレフィン；ノルボルネン系樹脂、エチレン・プロピレン共重合体等のポリオレフィン系ポリマー；塩化ビニル系ポリマー、ナイロンや芳香族ポリアミド等のアミド系ポリマー；イミド系ポリマー；スルホン系ポリマー；ポリエーテルスルホン系ポリマー；ポリエーテルエーテルケトン系ポリマー；ポリフェニレンスルフィド系ポリマー；塩化ビニリデン系ポリマー；ビニルアルコール系ポリマー；ビニルブチラール系ポリマー；アリレート系ポリマー；ポリオキシメチレン系ポリマー；エポキシ系ポリマー；トリアセチルセルロースに代表されるセルロース系ポリマー；またはこれらのポリマーのモノマー単位で共重合させた共重合体；などが挙げられる。
　また、上記熱可塑性樹脂としては、上記で例示したポリマーを２種以上混合したポリマーも例として挙げられる。 Examples of the polymer contained in the thermoplastic resin include polycarbonate polymers; polyester polymers such as polyethylene terephthalate (PET); acrylic polymers such as polymethyl methacrylate (PMMA); polystyrene, acrylonitrile / styrene copolymers (AS Styrenic polymers such as resin); and the like.
Polyolefins such as polyethylene and polypropylene; polyolefin polymers such as norbornene resins and ethylene / propylene copolymers; amide polymers such as vinyl chloride polymers, nylons and aromatic polyamides; imide polymers; sulfone polymers; Ether sulfone polymer; polyether ether ketone polymer; polyphenylene sulfide polymer; vinylidene chloride polymer; vinyl alcohol polymer; vinyl butyral polymer; arylate polymer; polyoxymethylene polymer; epoxy polymer; And a typical cellulose-based polymer; or a copolymer obtained by copolymerizing monomer units of these polymers.
Examples of the thermoplastic resin include a polymer obtained by mixing two or more of the polymers exemplified above.
　｛貫通孔｝
　本発明のプラスチックセルが有するプラスチック基板は、貫通孔を有する。
　ここで、貫通孔の形状は特に限定されず、円形、矩形等様々な形状とすることができる。 {Through hole}
The plastic substrate of the plastic cell of the present invention has a through hole.
Here, the shape of the through hole is not particularly limited, and may be various shapes such as a circle and a rectangle.
　｛導電材料｝
　プラスチック基板が有する貫通孔は、貫通孔中に導電材料を有する。
　導電材料に用いられる素材は特に限定されず、後述する透明導電層に用いられる材料と同一のものを用いることが好ましく、後述する透明導電層と一体的に形成されていることがより好ましい。この場合、プラスチック基板に貫通孔を開けてから透明導電層を配置することで、貫通孔中まで連続的に透明導電層を形成し、導電材料を兼ねることができる。 {Conductive material}
The through hole of the plastic substrate has a conductive material in the through hole.
The material used for the conductive material is not particularly limited, and the same material as that used for the transparent conductive layer described later is preferably used, and more preferably formed integrally with the transparent conductive layer described later. In this case, by disposing the transparent conductive layer after opening the through hole in the plastic substrate, the transparent conductive layer can be continuously formed up to the inside of the through hole and can also serve as the conductive material.
　導電材料は、貫通孔の体積中５０％以上占めることが好ましく、７０％以上を占めることがより好ましく、９０％以上を占めることがさらに好ましい。 The conductive material preferably occupies 50% or more of the volume of the through hole, more preferably 70% or more, and even more preferably 90% or more.
〔透明導電層〕
　本発明のプラスチックセルが有する第１の透明導電層および第２の透明導電層（以下、特に区別を要しない場合は単に「透明導電層」とも略す。）は、いずれも、プラスチック基板上に配置され、導電性を有する層である。
　本発明において、「導電性を有する」とは、シート抵抗値が０．１Ω／□～１０，０００Ω／□であることをいい、一般的には電気抵抗層と呼ばれるものも含む。
　また、フレキシブルディスプレイ装置等の電極として用いる場合、シート抵抗値は低いことが好ましく、具体的には３００Ω／□以下であることが好ましく、２００Ω／□以下であることが特に好ましく、１００Ω／□以下であることが最も好ましい。 [Transparent conductive layer]
Both the first transparent conductive layer and the second transparent conductive layer (hereinafter simply referred to as “transparent conductive layer” unless otherwise required) included in the plastic cell of the present invention are disposed on the plastic substrate. And a conductive layer.
In the present invention, “having conductivity” means that the sheet resistance value is 0.1Ω / □ to 10,000Ω / □, and also includes what is generally called an electric resistance layer.
Further, when used as an electrode for a flexible display device or the like, the sheet resistance value is preferably low, specifically preferably 300Ω / □ or less, particularly preferably 200Ω / □ or less, and 100Ω / □ or less. Most preferably.
　本発明に用いられる透明導電層において、「透明」とは、透過率が６０％以上９９％以下であることを意味する。
　透明導電層の透過率としては、７５％以上であることが好ましく、８０％以上であることが特に好ましく、９０％以上であることが最も好ましい。 In the transparent conductive layer used in the present invention, “transparent” means that the transmittance is 60% or more and 99% or less.
The transmittance of the transparent conductive layer is preferably 75% or more, particularly preferably 80% or more, and most preferably 90% or more.
　本発明に用いられる透明導電層に使用できる素材としては、金属酸化物（ＩｎｄｉｕｍＴｉｎ Ｏｘｉｄｅ：ＩＴＯなど）、カーボンナノチューブ（Ｃａｒｂｏｎ Ｎａｎｏｔｕｂｅ：ＣＮＴ、Ｃａｒｂｏｎ Ｎａｎｏｂｕｄ：ＣＮＢなど）、グラフェン、高分子導電体（ポリアセチレン、ポリピロール、ポリフェノール、ポリアニリン、ＰＥＤＯＴ／ＰＳＳなど）、金属ナノワイヤー（銀ナノワイヤー、銅ナノワイヤーなど）、メタルメッシュ（銀メッシュ、銅メッシュなど）などを挙げることができる。
　ここで、「ＰＥＤＯＴ／ＰＳＳ」とは、ＰＥＤＯＴ（３，４－エチレンジオキシチオフェンのポリマー）とＰＳＳ（スチレンスルホン酸のポリマー）を共存させたポリマーコンプレックスをいう。
　また、メタルメッシュの導電層は、金属のみで形成されたものよりも、銀、銅などの導電性微粒子がマトリクスに分散されて形成されたものが好ましい。 Materials that can be used for the transparent conductive layer used in the present invention include metal oxides (Indium Tin Oxide: ITO, etc.), carbon nanotubes (Carbon Nanotube: CNT, Carbon Nanobud: CNB, etc.), graphene, polymer conductors (polyacetylene, Polypyrrole, polyphenol, polyaniline, PEDOT / PSS, etc.), metal nanowires (silver nanowires, copper nanowires, etc.), metal meshes (silver mesh, copper meshes, etc.) and the like can be mentioned.
Here, “PEDOT / PSS” refers to a polymer complex in which PEDOT (a polymer of 3,4-ethylenedioxythiophene) and PSS (a polymer of styrene sulfonic acid) coexist.
In addition, the conductive layer of the metal mesh is preferably formed by dispersing conductive fine particles such as silver and copper in a matrix rather than the conductive layer formed of only metal.
　ＩＴＯなどの金属酸化物は、セラミック材料であり、従来技術のように、収縮を利用せずに成型する場合には、延伸作用によって、簡単にクラックが形成されてシート抵抗値が著しく上昇する問題があった。一方、本発明は収縮を利用することでクラックの発生を抑制でき、従来問題になっていた高いシート抵抗値を示す問題を改良し、透明導電層として用いることが可能になる。 Metal oxides such as ITO are ceramic materials, and when molding without using shrinkage as in the prior art, the problem is that cracks are easily formed by the stretching action and the sheet resistance value increases significantly. was there. On the other hand, the present invention can suppress the generation of cracks by utilizing the shrinkage, improves the problem of high sheet resistance, which has been a problem in the past, and can be used as a transparent conductive layer.
　メタルメッシュ形態、カーボンナノチューブ形態、金属ナノワイヤー等の粒子をマトリクスに分散した導電層は、マトリクスのガラス転移温度（Ｔｇ）をプラスチック基板の収縮温度以下とすることで、プラスチック基板の収縮に追随しやすくすることが可能であり、金属酸化物や高分子導電体を用いた導電層よりも、シワの発生を抑制することができ、ヘイズの上昇を抑えることができるため好ましい。 A conductive layer in which particles such as metal mesh, carbon nanotube, and metal nanowires are dispersed in a matrix follows the shrinkage of the plastic substrate by setting the glass transition temperature (Tg) of the matrix below the shrinkage temperature of the plastic substrate. This is more preferable than a conductive layer using a metal oxide or a polymer conductor because generation of wrinkles can be suppressed and an increase in haze can be suppressed.
〔配向層〕
　本発明のプラスチックセルにおいて、プラスチック基板の上に設けた透明導電層と、後述する流体層との間に、配向層を備えていてもよい。好ましい形態として、プラスチックセルに用いる第１のプラスチック基板および第２のプラスチック基板の最表面に配向層を有し、液晶性化合物を含む流体層を配向させる機能を持たせることができる。 (Orientation layer)
In the plastic cell of the present invention, an alignment layer may be provided between a transparent conductive layer provided on the plastic substrate and a fluid layer described later. As a preferred mode, an alignment layer is provided on the outermost surfaces of the first plastic substrate and the second plastic substrate used in the plastic cell, and a function of aligning a fluid layer containing a liquid crystal compound can be provided.
　本発明に用いられる配向層は、電圧無印加時に、流体層に含まれる液晶性組成物を水平配向させる配向層でも、垂直配向させる配向層でもよい。
　配向層の素材や処理方法は特に限定されることはなく、ポリマーを用いた配向層、シランカップリング処理を施した配向層、４級アンモニウム塩を用いた配向層、酸化ケイ素を斜め方向から蒸着した配向層、光異性化を利用する配向層等、各種配向層を用いることができる。また、配向層への表面処理として、ラビング処理やエネルギー線照射や光照射などによる表面処理を用いてもよい。 The alignment layer used in the present invention may be an alignment layer that horizontally aligns the liquid crystalline composition contained in the fluid layer when no voltage is applied, or an alignment layer that vertically aligns.
The material and processing method of the alignment layer are not particularly limited. An alignment layer using a polymer, an alignment layer subjected to a silane coupling process, an alignment layer using a quaternary ammonium salt, and silicon oxide are deposited from an oblique direction. Various alignment layers such as an alignment layer and an alignment layer utilizing photoisomerization can be used. Further, as a surface treatment for the alignment layer, a surface treatment by rubbing treatment, energy ray irradiation, light irradiation, or the like may be used.
　ポリマーを用いた配向層としては、ポリアミック酸またはポリイミドを用いた層；変性または無変性のポリビニルアルコールを用いた層；変性または無変性のポリアクリル酸を用いた層；下記一般式（Ｉ）で表される繰り返し単位と、下記一般式（ＩＩ）で表される繰り返し単位と、下記一般式（ＩＩＩ）で表される繰り返し単位のいずれかを含む（メタ）アクリル酸コポリマーを用いた層；のいずれかであることが好ましい。
　なお、「（メタ）アクリル酸」とは、アクリル酸またはメタクリル酸を表す表記である。
Figure JPOXMLDOC01-appb-C000001
 As an alignment layer using a polymer, a layer using polyamic acid or polyimide; a layer using modified or non-modified polyvinyl alcohol; a layer using modified or non-modified polyacrylic acid; in the following general formula (I) A layer using a (meth) acrylic acid copolymer containing any one of a repeating unit represented by the following general formula (II) and a repeating unit represented by the following general formula (III): Either is preferable.
Note that “(meth) acrylic acid” is a notation representing acrylic acid or methacrylic acid.
Figure JPOXMLDOC01-appb-C000001
　ここで、一般式（Ｉ）～（ＩＩＩ）中、Ｒ１およびＲ２は、それぞれ独立に、水素原子、ハロゲン原子または炭素原子数が１乃至６のアルキル基であり；Ｍは、プロトン、アルカリ金属イオンまたはアンモニウムイオンであり；Ｌ０は、－Ｏ－、－ＣＯ－、－ＮＨ－、－ＳＯ２－、アルキレン基、アルケニレン基、アリーレン基およびそれらの組み合わせからなる群より選ばれる二価の連結基であり；Ｒ０は、炭素原子数が１０乃至１００の炭化水素基または炭素原子数が１乃至１００のフッ素原子置換炭化水素基であり；Ｃｙは、脂肪族環基、芳香族基または複素環基であり、特にカルバゾール基を有することが好ましく；ｍは、１０乃至９９モル％であり；そして、ｎは、１乃至９０モル％である。 In the general formulas (I) to (III), R 1 and R 2 are each independently a hydrogen atom, a halogen atom or an alkyl group having 1 to 6 carbon atoms; M is a proton, an alkali L 0 is a divalent selected from the group consisting of —O—, —CO—, —NH—, —SO 2 —, an alkylene group, an alkenylene group, an arylene group, and combinations thereof. R 0 is a hydrocarbon group having 10 to 100 carbon atoms or a fluorine atom-substituted hydrocarbon group having 1 to 100 carbon atoms; Cy is an aliphatic ring group, aromatic group or It is a heterocyclic group, preferably having a carbazole group; m is 10 to 99 mol%; and n is 1 to 90 mol%.
　これらのうち、ポリイミド、一般式（Ｉ）～（ＩＩＩ）で表される化合物、および、シランカップリング剤のいずれかを含む配向層を用いることが、配向能力、耐久性、絶縁性、コストの観点から好ましく、特にポリイミド、および、一般式（Ｉ）～（ＩＩＩ）で表され、かつ、カルバゾール基を有する化合物のいずれかを含む配向層を用いることが好ましい。 Among these, using an alignment layer containing any one of polyimide, compounds represented by the general formulas (I) to (III), and a silane coupling agent is advantageous in terms of alignment ability, durability, insulation, and cost. It is preferable from the viewpoint, and it is particularly preferable to use an alignment layer containing any of polyimide and a compound represented by the general formulas (I) to (III) and having a carbazole group.
　また配向層としては、偏光および非偏光の紫外線（ＵＶ）光の照射によって液晶の配向処理が可能となる光配向層を用いてもよい。 Further, as the alignment layer, a photo-alignment layer that enables alignment treatment of liquid crystal by irradiation with polarized and non-polarized ultraviolet (UV) light may be used.
〔流体層〕
　本発明のプラスチックセルが有する流体層は、気体、プラズマ流体以外の流動性のある連続体であれば特に限定はない。
　特に好ましい物質状態としては、液体、および、液晶体であることが好ましく、流体層としては、液晶性化合物を含有する液晶組成物を用いて形成された液晶層であることが最も好ましい。
　ここで、一般的に、液晶性化合物はその形状から、棒状タイプと円盤状タイプに分類できる。さらにそれぞれ低分子と高分子タイプがある。高分子とは一般に重合度が１００以上のものを指す（高分子物理・相転移ダイナミクス，土井 正男 著，２頁，岩波書店，１９９２）。本発明では、いずれの液晶性化合物を用いることもできるが、棒状液晶性化合物またはディスコティック液晶性化合物（円盤状液晶性化合物）を用いるのが好ましい。２種以上の棒状液晶性化合物、２種以上の円盤状液晶性化合物、または棒状液晶性化合物と円盤状液晶性化合物との混合物を用いてもよい。上述の液晶性化合物の固定化のために、重合性基を有する棒状液晶性化合物または円盤状液晶性化合物を用いて形成することがより好ましく、液晶性化合物が１分子中に重合性基を２以上有することがさらに好ましい。液晶性化合物が二種類以上の混合物の場合には、少なくとも１種類の液晶性化合物が１分子中に２以上の重合性基を有していることが好ましい。 (Fluid layer)
The fluid layer of the plastic cell of the present invention is not particularly limited as long as it is a fluid continuous material other than gas and plasma fluid.
A particularly preferable material state is preferably a liquid and a liquid crystal body, and a fluid layer is most preferably a liquid crystal layer formed using a liquid crystal composition containing a liquid crystal compound.
Here, in general, liquid crystal compounds can be classified into a rod type and a disk type from the shape. In addition, there are low and high molecular types, respectively. Polymer generally refers to a polymer having a degree of polymerization of 100 or more (Polymer Physics / Phase Transition Dynamics, Masao Doi, 2 pages, Iwanami Shoten, 1992). In the present invention, any liquid crystal compound can be used, but a rod-like liquid crystal compound or a discotic liquid crystal compound (discotic liquid crystal compound) is preferably used. Two or more kinds of rod-like liquid crystalline compounds, two or more kinds of disc-like liquid crystalline compounds, or a mixture of a rod-like liquid crystalline compound and a disk-like liquid crystalline compound may be used. In order to fix the liquid crystalline compound, it is more preferable to use a rod-like liquid crystalline compound having a polymerizable group or a discotic liquid crystalline compound, and the liquid crystalline compound has 2 polymerizable groups in one molecule. It is more preferable to have the above. In the case where the liquid crystal compound is a mixture of two or more, it is preferable that at least one liquid crystal compound has two or more polymerizable groups in one molecule.
　本発明のプラスチックセルは、上述した流体層が液晶層である態様、すなわち、液晶セルであることが好ましい。
　ここで、液晶セルとは、薄型テレビ、モニター、ノートパソコン、携帯電話などに用いられる液晶表示装置に用いられる液晶セル、および、インテリア、建材、車両などに適用される光の強弱を変化させる調光装置に用いられる液晶セルも含む。すなわち、２枚の基板間に封入した液晶組成物などを、電圧を調整することで、分極率をもつ液晶組成物を駆動させる装置の総称である。 The plastic cell of the present invention is preferably an embodiment in which the fluid layer is a liquid crystal layer, that is, a liquid crystal cell.
Here, the liquid crystal cell is a liquid crystal cell used in a liquid crystal display device used in a flat-screen television, a monitor, a notebook computer, a mobile phone, and the like, and a light intensity applied to interiors, building materials, vehicles, and the like. A liquid crystal cell used for an optical device is also included. That is, it is a general term for devices that drive a liquid crystal composition having a polarizability by adjusting a voltage of a liquid crystal composition or the like sealed between two substrates.
　液晶セルの駆動モードとしては、水平配向型（Ｉｎ－Ｐｌａｎｅ－Ｓｗｉｔｃｈｉｎｇ：ＩＰＳ）、垂直配向型（Ｖｉｒｔｉｃａｌ Ａｌｉｇｎｍｅｎｔ：ＶＡ）、ツイストネマチック型（Ｔｗｉｓｔｅｄ Ｎｅｍａｔｉｃ：ＴＮ）、スーパーツイストネマチック型（Ｓｕｐｅｒ Ｔｗｉｓｔｅｄ Ｎｅｍａｔｉｃ：ＳＴＮ）をはじめ、各種の方式を用いることができる。 As the driving mode of the liquid crystal cell, horizontal alignment type (In-Plane-Switching: IPS), vertical alignment type (Virtual Alignment: VA), twisted nematic type (Twisted Nematic: TN), super twisted nematic type (Super Twisted Nematic: TW). Various methods including STN) can be used.
　また、本発明のプラスチックセルのセル内部においては、調光素子において光の強弱を変化させるために用いられる色素分子などを併用してもよい。 In addition, inside the plastic cell of the present invention, a dye molecule used for changing the intensity of light in the light control element may be used in combination.
　また、液晶セルの構成に応じて、液晶セルの外部にバックライト部材や偏光板部材や表面反射を制御する部材などを併設あるいは貼合によって用いてもよい。 Further, depending on the configuration of the liquid crystal cell, a backlight member, a polarizing plate member, a member for controlling surface reflection, or the like may be provided outside or attached to the outside of the liquid crystal cell.
〔封止部分〕
　本発明のプラスチックセルは、上述した流体層を封止する封止部分を有する。
　ここで、上記封止部分は、第１のプラスチック基板または第２のプラスチック基板の一部が変形して形成されるため、第１のプラスチック基板または第２のプラスチック基板の一部を含む。
　また、上記封止部分は、プラスチック基板同士の熱融着により形成される封止であることが好ましい。 (Sealed part)
The plastic cell of this invention has the sealing part which seals the fluid layer mentioned above.
Here, since the sealing portion is formed by deforming a part of the first plastic substrate or the second plastic substrate, it includes a part of the first plastic substrate or the second plastic substrate.
Moreover, it is preferable that the said sealing part is the sealing formed by the heat sealing | fusion of plastic substrates.
　本発明のプラスチックセルは、平面形状を、矩形状としてもよい。正方形でも長方形でも、また大きさについても制限はない。 The planar shape of the plastic cell of the present invention may be rectangular. There are no restrictions on the size of the square or rectangle.
　また、本発明のプラスチックセルは、平面形状を、矩形以外の形状としてもよい。例えば円形、楕円形、三角形、五角形以上の多角形としてもよいし、直線および曲線を組み合わせた自由な形状、またプラスチックセルの周囲が封止されているのであれば、ドーナツ型のように内部がくりぬかれた形状としてもよい。 Also, the plastic cell of the present invention may have a planar shape other than a rectangle. For example, it may be a circle, an ellipse, a triangle, a polygon more than a pentagon, a free shape combining straight lines and curves, and if the periphery of a plastic cell is sealed, the inside will be like a donut shape. It may be a hollow shape.
　更に、本発明のプラスチックセルは、第１のプラスチック基板および第２のプラスチック基板として長尺状のフィルムを用いることができることから、プラスチックセルとした後に、長手方向に巻き取られたロール形態とすることもできる。これは本発明のプラスチックセルの梱包、出荷、輸送などに寄与することができる。 Furthermore, since the plastic cell of this invention can use a elongate film as a 1st plastic substrate and a 2nd plastic substrate, after setting it as a plastic cell, it is set as the roll form wound up by the longitudinal direction. You can also. This can contribute to packing, shipping, transportation, etc. of the plastic cell of the present invention.
〔電極〕
　本発明のプラスチックセルは、駆動電圧を印加するため、透明導電層と接続する電極を、導電材料を介して取りつけてもよい。例えば、プラスチック基板の透明導電層とは反対側の面に露出した導電材料に銀ペーストなどの導電性素材や導電性テープなどを用いてリード端子と接続する方法などを用いることができる。 〔electrode〕
In the plastic cell of the present invention, in order to apply a driving voltage, an electrode connected to the transparent conductive layer may be attached via a conductive material. For example, a conductive material exposed on the surface opposite to the transparent conductive layer of the plastic substrate can be used such as a method of connecting to a lead terminal using a conductive material such as silver paste or a conductive tape.
［プラスチックセルの製造方法］
　本発明のプラスチックセルの製造方法（以下、「本発明の製造方法」とも略す。）は、長尺状の第１のプラスチック基板に第１の貫通孔を開ける工程（以下、「貫通孔形成工程１」とも略す。）、
　第１の貫通孔が開けられた長尺状の第１のプラスチック基板に第１の透明導電層を配置する工程（以下、「導電層配置工程１」とも略す。）、
　長尺状の第２のプラスチック基板に第２の貫通孔を開ける工程（以下、「貫通孔形成工程２」とも略す。）、
　第２の貫通孔が開けられた長尺状の第２のプラスチック基板に第２の透明導電層を配置する工程（以下、「導電層配置工程２」とも略す。）、
　第１の透明導電層の上に、流体層を配置する工程（以下、「流体層配置工程」とも略す。）、
　第１の透明導電層の上に流体層が配置された第１のプラスチック基板と、第２の透明導電層が配置された第２のプラスチック基板とを、ロールトゥロールで貼り合わせ、長尺状の積層体を作製する工程（以下、「積層体作製工程」とも略す。）、
　積層体を作製した後、第１のプラスチック基板および第２のプラスチック基板を熱融着することにより、流体層を長手方向に封止する工程（以下、「封止工程」とも略す。）、および、
　積層体をロール状に巻く工程、
　を含む、プラスチックセルの製造方法である。
　以下に、貫通孔形成工程１および貫通孔形成工程２（以下、特に区別を要しない場合は単に「貫通孔形成工程」とも略す。）、導電層配置工程１および導電層配置工程２（以下、特に区別を要しない場合は単に「導電層配置工程」とも略す。）、ならびに、流体層配置工程、積層体作製工程および封止工程について詳述する。 [Plastic cell manufacturing method]
The plastic cell manufacturing method of the present invention (hereinafter also abbreviated as “the manufacturing method of the present invention”) includes a step of opening a first through-hole in a long first plastic substrate (hereinafter referred to as a “through-hole forming step”). 1 ”),
A step of disposing a first transparent conductive layer on a long first plastic substrate having a first through hole (hereinafter also referred to as “conductive layer disposing step 1”);
A step of opening a second through hole in the long second plastic substrate (hereinafter, also referred to as “through hole forming step 2”),
A step of arranging a second transparent conductive layer on a long second plastic substrate having a second through hole (hereinafter also referred to as “conductive layer arranging step 2”);
A step of disposing a fluid layer on the first transparent conductive layer (hereinafter also abbreviated as “fluid layer disposing step”);
The first plastic substrate in which the fluid layer is arranged on the first transparent conductive layer and the second plastic substrate in which the second transparent conductive layer is arranged are bonded together by a roll-to-roll, and is long. A step of manufacturing the laminate (hereinafter also abbreviated as “laminate preparation step”),
After the laminated body is manufactured, the step of sealing the fluid layer in the longitudinal direction by heat-sealing the first plastic substrate and the second plastic substrate (hereinafter also abbreviated as “sealing step”), and ,
A step of winding the laminate into a roll,
The manufacturing method of the plastic cell containing this.
In the following, through-hole forming step 1 and through-hole forming step 2 (hereinafter simply referred to as “through-hole forming step” unless otherwise required), conductive layer arranging step 1 and conductive layer arranging step 2 (hereinafter referred to as “through-hole forming step”). If there is no particular need for distinction, it is simply abbreviated as “conductive layer arranging step”.), And the fluid layer arranging step, the laminate manufacturing step, and the sealing step will be described in detail.
〔貫通孔形成工程〕
　本発明の製造方法が有する貫通孔形成工程１は、長尺状の第１のプラスチック基板に第１の貫通孔を開ける工程であり、貫通孔形成工程２は、長尺状の第２のプラスチック基板に第２の貫通孔を開ける工程である。
　ここで、プラスチック基板に貫通孔を形成する方法は特に限定されず、各種公知の方法を用いることができる。例えば、剣山、針、ドリル、炭酸ガスレーザー、ＹＡＧ（Yttrium Aluminum Garnet）レーザー等のレーザー、プラズマ等を用いて貫通孔を開けることができる。 [Through hole forming process]
The through-hole forming step 1 included in the manufacturing method of the present invention is a step of opening a first through-hole in a long first plastic substrate, and the through-hole forming step 2 is a long second plastic. In this step, a second through hole is formed in the substrate.
Here, the method of forming the through hole in the plastic substrate is not particularly limited, and various known methods can be used. For example, the through-hole can be formed using a sword, a needle, a drill, a carbon dioxide laser, a laser such as a YAG (Yttrium Aluminum Garnet) laser, plasma, or the like.
〔導電層配置工程〕
　本発明の製造方法が有する導電層配置工程１は、第１の貫通孔が開けられた長尺状の第１のプラスチック基板に第１の透明導電層を配置する工程であり、導電層配置工程２は、第２の貫通孔が開けられた長尺状の第２のプラスチック基板に第２の透明導電層を配置する工程である。
　ここで、貫通孔が開けられたプラスチック基板に透明導電層を配置する方法は特に限定されず、本発明のプラスチックセルにおいて説明した透明導電層に使用できる素材を、例えば、塗布、蒸着、印刷などの方法により配置することができる。 [Conductive layer placement process]
The conductive layer disposing step 1 of the manufacturing method of the present invention is a step of disposing the first transparent conductive layer on the long first plastic substrate having the first through holes formed therein. The conductive layer disposing step 2 is a step of disposing a second transparent conductive layer on a long second plastic substrate having a second through hole.
Here, the method for disposing the transparent conductive layer on the plastic substrate having the through holes is not particularly limited, and materials that can be used for the transparent conductive layer described in the plastic cell of the present invention include, for example, coating, vapor deposition, printing, and the like. It can arrange | position by the method of.
〔流体層配置工程〕
　本発明の製造方法が有する流体層配置工程は、第１の透明導電層の上に、流体層を配置する工程である。
　ここで、第１の透明導電層の上に流体層を配置する方法は特に限定されず、例えば、塗布、ディップ、毛細管現象を利用した注入などの各種公知の方法を用いることができる。 [Fluid layer placement process]
The fluid layer arrangement step of the manufacturing method of the present invention is a step of arranging a fluid layer on the first transparent conductive layer.
Here, the method of disposing the fluid layer on the first transparent conductive layer is not particularly limited, and various known methods such as coating, dipping, and injection utilizing capillary action can be used.
〔積層体作製工程〕
　本発明の製造方法が有する積層体作製工程は、第１の透明導電層および流体層が配置された第１のプラスチック基板と、第２の透明導電層が配置された第２のプラスチック基板とを、ロールトゥロール（Roll to Roll）で貼り合わせ、長尺状の積層体を作製する工程である。
　ここで、ロールトゥロールで貼り合わせる方法は特に限定されず、例えば、第１の透明導電層および流体層が配置された第１のプラスチック基板と、第２の透明導電層が配置された第２のプラスチック基板とを、ニップロールの間を通して貼り合わせる方法などを用いることができる。 [Laminated body production process]
The laminate manufacturing process of the manufacturing method of the present invention includes a first plastic substrate on which a first transparent conductive layer and a fluid layer are disposed, and a second plastic substrate on which a second transparent conductive layer is disposed. , And a roll-to-roll process to produce a long laminate.
Here, the method of bonding by roll-to-roll is not particularly limited. For example, the first plastic substrate on which the first transparent conductive layer and the fluid layer are arranged, and the second on which the second transparent conductive layer is arranged. For example, a method in which the plastic substrate is bonded to each other through a nip roll can be used.
〔封止工程〕
　本発明の製造方法が有する封止工程は、第１のプラスチック基板および第２のプラスチック基板を熱融着することにより、流体層を長手方向に封止する工程である。
　ここで、熱融着の方法としては、熱融着に必要なエネルギーをプラスチック基板に与える方法を用いれば特に限定されない。具体的には、高温の金属素子をプラスチック基板に接触させる方法、ＣＯｘレーザーを集光させてプラスチック基板に当てる方法、超音波をプラスチック基板に当てる方法等が挙げられる。 [Sealing process]
The sealing step of the manufacturing method of the present invention is a step of sealing the fluid layer in the longitudinal direction by thermally fusing the first plastic substrate and the second plastic substrate.
Here, the method of heat fusion is not particularly limited as long as a method of giving energy necessary for heat fusion to the plastic substrate is used. Specific examples include a method in which a high-temperature metal element is brought into contact with a plastic substrate, a method in which a COx laser is condensed and applied to the plastic substrate, and a method in which ultrasonic waves are applied to the plastic substrate.
　以下に実施例を挙げて本発明を具体的に説明するが、以下の実施例に示す素材、試薬、物質量とその割合、条件、操作等は、本発明の主旨から逸脱しない限りにおいて適宜変更することができる。したがって本発明の範囲は以下の実施例に制限されるものではない。 The present invention will be specifically described with reference to the following examples, but the materials, reagents, substance amounts and ratios, conditions, operations, etc. shown in the following examples are appropriately changed without departing from the gist of the present invention. can do. Therefore, the scope of the present invention is not limited to the following examples.
［実施例１］
＜透明導電層の作製＞
　帝人（株）製のポリカーボネート（ＰＣ－２１５１、厚み２５０μｍ）に穴あけパンチを使用して貫通孔を開けた後、ＵＳ２０１３／０３４１０７４号公報の実施例１に記載された方法でＡｇナノワイヤーを用いて透明導電層を作製し、ポリカーボネートからなるプラスチック基板と、Ａｇナノワイヤーからなる透明導電層とが積層された積層体を作製した。作製した積層体においては、ポリカーボネートに設けた貫通孔の中にもＡｇナノワイヤーからなる導電材料が形成されていた。 [Example 1]
<Preparation of transparent conductive layer>
After making a through hole in a polycarbonate (PC-2151, thickness 250 μm) made by Teijin Limited using a punch, using an Ag nanowire by the method described in Example 1 of US2013 / 0341074 A transparent conductive layer was produced, and a laminate was produced in which a plastic substrate made of polycarbonate and a transparent conductive layer made of Ag nanowires were laminated. In the produced laminated body, the electrically conductive material which consists of Ag nanowire was formed also in the through-hole provided in the polycarbonate.
＜配向層の作製＞
　上記作製した積層体を１０ｃｍ角に裁断し、液晶配向剤として、ポリアミック酸配向層塗布液（ＪＳＲ製ＪＡＬＳ６８４）をバーコーター＃１．６を用いて塗布した。その後、膜面温度８０℃で３分間乾燥し、液晶配向層１０１を作製した。このとき、液晶配向層の膜厚は６０ｎｍであった。
　このように作製した、プラスチック基板、透明導電層および液晶配向層がこの順で積層された積層体を２組用意した。 <Preparation of alignment layer>
The produced laminate was cut into a 10 cm square, and a polyamic acid alignment layer coating solution (JALS684 manufactured by JSR) was applied as a liquid crystal alignment agent using a bar coater # 1.6. Then, it dried for 3 minutes at the film surface temperature of 80 degreeC, and produced the liquid crystal aligning layer 101. FIG. At this time, the film thickness of the liquid crystal alignment layer was 60 nm.
Two sets of laminates were prepared in which the plastic substrate, the transparent conductive layer, and the liquid crystal alignment layer were laminated in this order.
＜スペーサー層の作製＞
　下記処方でスペーサー層分散液を作製した。
―――――――――――――――――――――――――――――――――
スペーサー層分散液の処方
―――――――――――――――――――――――――――――――――
ビーズスペーサＳＰ－２０８（積水化学（株）製）　　　　１００質量部
メチルイソブチルケトン　　　　　　　　　　固形分：０．２％となる量
――――――――――――――――――――――――――――――――― <Preparation of spacer layer>
A spacer layer dispersion was prepared according to the following formulation.
―――――――――――――――――――――――――――――――――
Formulation of spacer layer dispersion ―――――――――――――――――――――――――――――――――
Bead spacer SP-208 (manufactured by Sekisui Chemical Co., Ltd.) 100 parts by mass methyl isobutyl ketone solid content: 0.2% amount ――――――――――――――――――――― ――――――――――――
　作製したスペーサー層分散液を、液晶配向層が積層された積層体２組のそれぞれの上にアプリケータを用いてクリアランス１００μｍの設定で塗布した。
　その後、膜面温度が６０℃になるように加熱し、１分間乾燥し、スペーサー層を有する積層体を２組作製した。 The produced spacer layer dispersion was applied on each of two sets of laminates on which liquid crystal alignment layers were laminated using an applicator with a clearance of 100 μm.
Then, it heated so that film surface temperature might be 60 degreeC, it dried for 1 minute, and produced 2 sets of laminated bodies which have a spacer layer.
＜液晶セルの作製＞
　下記処方で液晶層組成物を作製した。
―――――――――――――――――――――――――――――――――
液晶層組成物
―――――――――――――――――――――――――――――――――
ＺＬＩ２８０６（メルク社製）　　　　　　　　　　　　　１００質量部
コレステリックノナネート（東京化成工業製）　　　　　１．７４質量部
Ｇ－４７２（林原製）　　　　　　　　　　　　　　　　３．００質量部
――――――――――――――――――――――――――――――――― <Production of liquid crystal cell>
A liquid crystal layer composition was prepared according to the following formulation.
―――――――――――――――――――――――――――――――――
Liquid crystal layer composition ――――――――――――――――――――――――――――――――――
ZLI2806 (manufactured by Merck) 100 parts by mass cholesteric nonanate (manufactured by Tokyo Chemical Industry) 1.74 parts by mass G-472 (manufactured by Hayashibara) 3.00 parts by mass -------- ――――――――――――――――――
　作製した液晶層組成物を、上記で作製したスペーサー層を有する積層体２組のうちの一方の中央に滴下し、もう一方のスペーサー層を有する積層体で挟みこみ、ローラーにて液晶層組成物を均一に広げて液晶層組成物を含む積層体とした。
　その後、本積層体の４辺を、加熱温度コントロール電動シーラー（ＯＰＬ－６００－１０、富士インパルス社製）を用いて、２３０℃５秒で熱融着により封止し、液晶を封入したプラスチックセル００１を作製した。 The prepared liquid crystal layer composition is dropped into the center of one of the two laminates having the spacer layer prepared above, sandwiched between the laminates having the other spacer layer, and the liquid crystal layer composition by a roller. Was uniformly spread to obtain a laminate including the liquid crystal layer composition.
Thereafter, the four sides of the laminate were sealed by heat fusion at 230 ° C. for 5 seconds using a heating temperature control electric sealer (OPL-600-10, manufactured by Fuji Impulse), and a plastic cell in which liquid crystal was sealed. 001 was produced.
　上記のように作製したプラスチックセル００１の封止部分を、ミクロトームを用いて断面切削し、電界放出形走査電子顕微鏡（Ｓ－５２００、日立ハイテクノロジーズ社製）で確認したところ、図１のように、表面（上面）のプラスチック基板１と裏面（下面）のプラスチック基板７とが直接接着して流体層４を封止しており、２つのプラスチック基板の間には透明導電層を有していなかった。 The sealed portion of the plastic cell 001 produced as described above was cut with a microtome and confirmed with a field emission scanning electron microscope (S-5200, manufactured by Hitachi High-Technologies Corporation). As shown in FIG. The plastic substrate 1 on the front surface (upper surface) and the plastic substrate 7 on the rear surface (lower surface) are directly bonded to seal the fluid layer 4, and there is no transparent conductive layer between the two plastic substrates. It was.
　上記のように作製したプラスチックセル００１は、フレキシブル性の確認のために中央付近で９０°に折り曲げても、封止部分に問題がないことを確認した。 The plastic cell 001 produced as described above was confirmed to have no problem in the sealed portion even when it was bent at 90 ° near the center for confirmation of flexibility.
＜駆動の確認＞
　作製したプラスチックセル００１の表面（上面）と裏面（下面）に露出した導電材料に電極を接続し、電圧３Ｖを印加したところ、印加・非印加に応じて液晶が駆動して、可逆的に着色、および、消色し駆動できることを確認した。 <Confirmation of drive>
When an electrode is connected to the conductive material exposed on the front surface (upper surface) and back surface (lower surface) of the manufactured plastic cell 001 and a voltage of 3 V is applied, the liquid crystal is driven according to application / non-application, and reversibly colored. It was confirmed that erasing and driving were possible.
［比較例１］
　実施例１において、端部の封止を熱融着する代わりに、ＵＶシール剤（ＴＢ１２２０、スリーボンド製）で４辺とも封止する以外は実施例１と同様の操作により、プラスチックセル００２を作製した。 [Comparative Example 1]
In Example 1, a plastic cell 002 is manufactured in the same manner as in Example 1 except that four sides are sealed with a UV sealant (TB1220, manufactured by Three Bond) instead of heat sealing the ends. did.
　プラスチックセル００２を、フレキシブル性の確認のために中央付近で９０°に折り曲げたところ、シール剤が剥がれてしまい、プラスチックセル中の液晶組成物の一部が流れ出してしまった。 When the plastic cell 002 was bent at 90 ° near the center for confirmation of flexibility, the sealing agent was peeled off, and a part of the liquid crystal composition in the plastic cell flowed out.
［比較例２］
　ポリカーボネートに貫通孔を開けなかった以外は、実施例１と同様の操作により、プラスチックセル００３を作製した。 [Comparative Example 2]
A plastic cell 003 was produced in the same manner as in Example 1 except that the through hole was not formed in the polycarbonate.
　作製したプラスチックセル００３に電極を取り付けようと試みたが、導通する部分がなく駆動させることができなかった。 An attempt was made to attach an electrode to the produced plastic cell 003, but it could not be driven because there was no conducting part.
　１、７　　　プラスチック基板
　２、６　　　透明導電層
　３、５　　　配向層
　４　　　　　流体層
　８、１０　　電極に繋がる導線
　９、１１　　導電ペースト
　１２、１３　貫通孔
　１４　　　　封止部分
　１００　　　プラスチックセル DESCRIPTION OF SYMBOLS 1, 7 Plastic substrate 2, 6 Transparent conductive layer 3, 5 Orientation layer 4 Fluid layer 8, 10 Conductor connected to electrode 9, 11 Conductive paste 12, 13 Through hole 14 Sealing part 100 Plastic cell

Claims (6)

  1. 　第１のプラスチック基板と、第１の透明導電層と、流体層と、第２の透明導電層と、第２のプラスチック基板と、をこの順に有し、
    　さらに、前記第１のプラスチック基板または前記第２のプラスチック基板の一部が変形して前記流体層を封止する封止部分を有し、
    　前記第１のプラスチック基板が、第１の貫通孔を有し、
    　前記第２のプラスチック基板が、第２の貫通孔を有し、
    　前記第１の貫通孔中に第１の導電材料を有し、
    　前記第２の貫通孔中に第２の導電材料を有する、プラスチックセル。     A first plastic substrate, a first transparent conductive layer, a fluid layer, a second transparent conductive layer, and a second plastic substrate in this order;
    Furthermore, a part of the first plastic substrate or the second plastic substrate is deformed to have a sealing portion for sealing the fluid layer,
    The first plastic substrate has a first through hole;
    The second plastic substrate has a second through hole;
    A first conductive material in the first through hole;
    A plastic cell having a second conductive material in the second through hole.
  2. 　前記第１の導電材料が、前記第１の透明導電層と同じ材料であり、前記第２の導電材料が、前記第２の透明導電層と同じ材料である、請求項１に記載のプラスチックセル。 The plastic cell according to claim 1, wherein the first conductive material is the same material as the first transparent conductive layer, and the second conductive material is the same material as the second transparent conductive layer. .
  3. 　前記第１の透明導電層と前記流体層との間、および、前記第２の透明導電層と前記流体層との間に、それぞれ配向層を有し、
    　前記流体層が、液晶性化合物を含有する液晶組成物を用いて形成された液晶層である、請求項１または２に記載のプラスチックセル。     An alignment layer is provided between the first transparent conductive layer and the fluid layer, and between the second transparent conductive layer and the fluid layer, respectively.
    The plastic cell according to claim 1 or 2, wherein the fluid layer is a liquid crystal layer formed using a liquid crystal composition containing a liquid crystal compound.
  4. 　前記第１のプラスチック基板および前記第２のプラスチック基板がいずれも長尺状のフィルムであり、
    　前記長尺状のフィルムの長手方向に巻き取られたロール形態である、請求項１～３のいずれか１項に記載のプラスチックセル。     The first plastic substrate and the second plastic substrate are both long films,
    The plastic cell according to any one of claims 1 to 3, wherein the plastic cell is in the form of a roll wound in the longitudinal direction of the long film.
  5. 　さらに電極を有し、
    　前記電極と、前記第１の透明導電層および前記第２の透明導電層の少なくとも一方とが前記導電材料を介して接続されている、請求項１～４のいずれか１項に記載のプラスチックセル。     And also have electrodes
    The plastic cell according to any one of claims 1 to 4, wherein the electrode and at least one of the first transparent conductive layer and the second transparent conductive layer are connected via the conductive material. .
  6. 　長尺状の第１のプラスチック基板に第１の貫通孔を開ける工程、
    　前記第１の貫通孔が開けられた長尺状の第１のプラスチック基板に第１の透明導電層を配置する工程、
    　長尺状の第２のプラスチック基板に第２の貫通孔を開ける工程、
    　前記第２の貫通孔が開けられた長尺状の第２のプラスチック基板に第２の透明導電層を配置する工程、
    　前記第１の透明導電層の上に、流体層を配置する工程、
    　前記第１の透明導電層の上に前記流体層が配置された前記第１のプラスチック基板と、前記第２の透明導電層が配置された前記第２のプラスチック基板とを、ロールトゥロールで貼り合わせ、長尺状の積層体を作製する工程、
    　前記積層体を作製した後、前記第１のプラスチック基板および前記第２のプラスチック基板を熱融着することにより、前記流体層を長手方向に封止する工程、および、
    　前記積層体をロール状に巻く工程、
    　を含む、プラスチックセルの製造方法。     Opening a first through-hole in a long first plastic substrate;
    Disposing a first transparent conductive layer on an elongated first plastic substrate in which the first through hole is formed;
    Opening a second through hole in a long second plastic substrate;
    Disposing a second transparent conductive layer on an elongated second plastic substrate having the second through-hole formed therein;
    Disposing a fluid layer on the first transparent conductive layer;
    The first plastic substrate in which the fluid layer is disposed on the first transparent conductive layer and the second plastic substrate in which the second transparent conductive layer is disposed are bonded by roll-to-roll. Process for producing a long laminate,
    After producing the laminate, thermally sealing the first plastic substrate and the second plastic substrate to seal the fluid layer in the longitudinal direction; and
    Winding the laminate into a roll,
    A method for producing a plastic cell, comprising:
PCT/JP2017/005820 2016-02-19 2017-02-17 Plastic cell and method for producing same WO2017142050A1 (en)

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